Sony XR-C7500RX Service Manual page 39

Pin No. Pin Name
111 CD MD
NC
112
113
TUNON
NC
114
115 REIN1
116 REIN0
117 NOSE-SW
118 DOORIND
119 VSS
120 DOLBY
*1 Loading/tape operation motor control
Mode
Terminal
LM-LOD (pin y; )
LM-EJ (pin tl )
I/O
Setting terminal for the internal mechanism CD or MD
I
"L": CD, "H": MD (fixed at "L" in this set)
I
Not used (fixed at "L")
Tuner system power supply on/off control signal output terminal
O
"H": tuner power on
O
Not used (open)
Dial pulse input of the rotary encoder (RE901) (A phase input)
I
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
Dial pulse input of the rotary encoder (RE901) (B phase input)
I
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
Front panel block remove/attach detection signal input from the nose detection switch (S600)
I
"L": front panel is attached
LED drive signal output of the tape window illumination and Z indicator (LED801, LSW801)
O
"H": LED on "H" is output to turn on LED when front panel is opened
— Ground terminal
O Dolby-B on/off select signal output to the CXA2510AQ (IC250) "H": dolby on
LOADING/
STOP
FORWARD
"L" "H"
"L" "L"
Description
EJECT/
BRAKE
REVERSE
"L" "H"
"H" "H"
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